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Considering his situation, Teacher Adu recommended the plan of '7.5mm + 8mm two rings, plus three longitudinal reinforcements, all in one step.' The double-ring structure, smaller in the front and larger in the back, combined with longitudinal reinforcements, can not only significantly increase size and thickness but also enhance the sense of wrapping and layers of friction.

The front ring, 7.5mm, fits tightly against the glans, and the rear ring, 8mm, sits right behind it. The two rings are full and perfectly aligned. Three dragon veins run longitudinally, creating a three-dimensional structure of double-ring beads plus dragon veins, with the front contour appearing fuller and thicker.

**Bead Effects**

The double-ring beads provide a stronger sense of fullness and pressure during insertion. The front ring is 7.5mm for delicate wrapping, while the rear ring is 8mm for a higher protrusion. During thrusting, the height difference between the two rings creates stepped scraping and friction, continuously stimulating the vaginal inner walls, making it easier for the partner to feel the pleasure of being stretched and scraped.

**Effects of Dragon Tendon**

Three dragon tendons form a three-dimensional friction belt longitudinally, bringing a continuous tingling and itchy small-grain sensation, extending backward from the bead ring position. When the dragon tendons overlap with the beads, the stimulation area becomes larger and the texture more layered, with a significant increase in the sense of wrapping and friction, effectively improving the previous problem of 'weak wrapping feeling'.

1. Structural effect: Front 7.5, back 8 double rings + three dragon ribs, all in one step, significantly increasing size and thickness.

2. Function Enhancement: The beads are responsible for full scraping, the dragon tendon is responsible for vertical granular friction, and the dual stimulation improves the sense of wrapping.

3. Later expectations: After recovery, the granules and the outline of the dragon tendon will be clearer, and actual performance will be further improved.